I forgot about AOMs, hehe. I don't think AOMs can give full deflection so to speak so TTL is still out of the picture, but you can get real nice AM modulation with one. And as I had suspected you can get right up to nearly 1GHz with a red diode.LSRFAQ said:If your dead set on green, you can use a Acousto Optic Modulator for the green. You'll have a 7 to 10 Mhz bandwidth in the modulator, and with work, you can also have gray scale.
A normal small 50 to 100 mW red diode is good to almost a gigahertz. Around a Gigahertz, some wired problems with carrier lifetime in the diode start to occur.